Wafer processing method

US2024395620A1 · US · A1

Patent metadata
FieldValue
Publication numberUS-2024395620-A1
Application numberUS-202418664720-A
CountryUS
Kind codeA1
Filing dateMay 15, 2024
Priority dateMay 24, 2023
Publication dateNov 28, 2024
Grant date

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A wafer processing method for processing a wafer includes a reverse side which has an annular protruding portion on an outer circumferential portion thereof and a circular recessed portion in a region surrounded by the annular protruding portion on the reverse side, in which a sheet including no glue layer is fixed to a face side of the wafer and an annular frame is fixed to an outer circumferential portion of the sheet to form a wafer unit, the wafer is held on a holding table via the sheet, a dividing groove is formed in the circular recessed portion of the wafer, the annular protruding portion is separated from the wafer, and the annular protruding portion is removed from the sheet.

First claim

Opening claim text (preview).

What is claimed is: 1 . A wafer processing method for processing a wafer including a reverse side which has an annular protruding portion on an outer circumferential portion thereof and a circular recessed portion in a region surrounded by the annular protruding portion, the wafer processing method comprising: a wafer unit forming step of forming a wafer unit by fixing a sheet including no glue layer to a face side of the wafer and fixing an annular frame to an outer circumferen…

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What does patent US2024395620A1 cover?
A wafer processing method for processing a wafer includes a reverse side which has an annular protruding portion on an outer circumferential portion thereof and a circular recessed portion in a region surrounded by the annular protruding portion on the reverse side, in which a sheet including no glue layer is fixed to a face side of the wafer and an annular frame is fixed to an outer circumfere…
Who is the assignee on this patent?
Disco Corp
What technology area does this patent fall under?
Primary CPC classification H10P72/7402. Mapped technology areas include Electricity.
When was this patent published?
Publication date Thu Nov 28 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).